Hair waving device



Nov. 22, 1932. T. l. MOSELEY HAIR WAVING DEVICE Filed May 8. 19151 FIE.-

FIE .l.

4 INVENTOR 70/17/f/750/7 fiosz/e ATTORNEY Patented Nov. 22, 1932 UNITED STATES TOMLIN SON I. MOSELEY, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO DUAR'I MANU- FACTURING 00., LTD., OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALI- FORN IA HAIR WAVING DEVICE Application filed May 8, 1931.

This invention relates generally to hair waving appliances, and particularly to electrical heaters used in conjunction with the same.

In one form of hair waving apparatus in common usage, a strand of hair is wound spirally about a curling rod, the wound hair is covered with a suitable pad, and then a tubular shaped electrical heater is slipped over the assembly. Heaters of this character which have been utilized in the past have been characterized by certain disadvantages. For example these heaters have been constructed in such a manner that their outer surfaces are heated to such a degree as to make handling by the operator diflicult. Likewise they have been relatively ineflicient due to wasteful utilization of heat, and have been comparatively complicated and diflicult to manufacture.

It is an object of the present invention to devise a heater of the above character which will be so constructed that its outer surfaces will be maintained at a relatively low temperature, although adequate heat is supplied to the hair being waved.

It is a further object of the invention to devise aheater for hair waving appliances which will be relatively efiicient in operation, and which will be relatively simple in construction.

Further objects of the invention will appear from the following description in which the preferred embodiment of the invention has been set forth in detail in conjunction with the accompanying drawing. It is to be understood that the appended claims are to be accorded a range of equivalents consistent with the state of the prior art.

Referring to the drawing:

Figure 1 is an end View illustrating a heater constructed in accordance with the pres ent invention.

Fig. 2 is a side elevational view of the heater illustrated in Fig. 1.

Fig. 3 is an enlarged cross sectional View of my heater taken along the line 33 of Fig. 1, certain parts being shown in elevation.

Serial No. 535,911.

Fig. 4 is a cross sectional view taken along the line 4-4 of Fig. 3.

The heater as illustrated in the drawing consists of an open ended tube 10, made of some suitable metal such as aluminum. Surrounding the medial portion of tube 10 there is an electrical heating element 11. As is well known in the electrical art, such electrical heating elements can be constructed in various ways. For example as illustrated a layer of insulating material 12 such as mica can be applied to the medial portion of tube 10, and resistance wire 13 coiled about the same. The wire is then covered by a layer 14 of heat insulating material, as for example asbestos.

Surrounding tube 10 and the electrical heating element 11, I provide a sheath made of nonmetallic insulating material, such as a moldable phenolic condensate product. Thus to form a part of this sheath, I provide a casing member 16 which is circular in transverse cross section. This casing member is preferably shaped conically as illus trated, and its smaller end is formed to provide an inner annular shoulder 17 Shoul der 17 closely surrounds the adjacent end of tube 10, and as will be presently explained, serves as a part of the means for mounting the sheath upon the tube.

Surrounding the other end of tube 10 there is an annular member or ring 18, which can be formed of the same material as the casing member 16. The outer face of ring 18 is recessed on two diameters as indicated at 19 and 21 while the other face of the ring is provided with a single recess 22. The large end of casing member 16 engages within recess 22 as shown in Fig. 3, thus causing the casing member and the ring to be interlocked together. Lug 20 engaging in slot 25 prevents relative rotation between the ring and casing member.

In order to retain the casing member and the ring clamped together, and also to re tain these parts upon tube 10, the ends of this tube are provided with integral flanges 23 and 24, flange 23 serving to engage the outer face of annular shoulder 17, while flange 24 engages in recess 21. Note that flange 23 is inset from the adjacent end of casing member 16, while flange 24 is inset from the outer end face of ring 18, thus precluding contact of metallic parts with the fingers of the operator.

For making electrical connections I provide suitable means such as a flexible electrical cord 26. Conductors 27 and 28 of this cord connect to the terminals of resistance wire 13, while cord 29 is grounded to the metallic tube 10. All of these cords are extended thru apertures 31 in ring 18.

As illustrated in Fig. 3 the internal diameter of casing member 16 is such that a comparatively large annular air space 82 is formed between the intermediate portion of tube 10 and the electrical heating element, and the inner surfaces of casing member 16. In fact casing member 16 is only in contact with tube 10, Where the annular shoulder 17 engages the end portion of the tube. Such an air pocket provides a highly effective in sulation between the tube and heating element, and the casing member, thus preventing heating of the casing member to such a degree as to render handling by the fingers of the operator unpleasant. Very little heat is directly conducted to casing member 16 or to ring 18, as insulating materials such as phenolic condensate products are relatively poor heat conductors. Since the heat developed by the heating element is not dissipated to the surrounding sheath, it is substantially all concentrated and effectively transmitted to the wound hair within the tube 10.

The simplicity of construction afforded by my device renders it relatively cheap to manufacture and easy to assemble. With exception of the electrical heating element, the device is constructed of only three parts, the tube 10, casing member 16, and ring 18. These parts are held in assembled relationship without the use of bolts or nuts. The shaping of casing member 16 and ring 18 makes it possible to readily mold these parts of a suitable phenolic condensate product.

I claim:

1. In a hair waving heater, a metallic open ended tube. a heating element surrounding the medial portion of the tube, an exterior casing member of insulating material surrounding said tube, one end of said member engaging one end portion of the tube, and an annular ring of insulating material surrounding and engaging the other end of the tube, said ring having a recess in which the adiacent end of the casing member is interlocked.

2. In a hair waving heater, a metallic open ended tube, a heating element surrounding the medial portion of the tube, an exterior casing member of insulating material surrounding said tube, one end of said member engaging one end portion of the tube, and an annular ring of insulating material surrounding and engaging the other end of the tube, said ring having a recess in which the ad acent end of the casing member is interlocked, said casing being formed in such a manner that an air space is provided between its inner surfaces and the heating element.

3. In a hair waving heater, a hollow con ical casing member formed of a phenolic condensate product, the small end portion of said member being formed to provide an inner annular shoulder, a metallic tube extending thru said member, a flange formed upon one end of the tube to. engage the outer face of the shoulder, a ring formed of a phenolic condensate product surrounding theother end of the tube, said'ring having a recess in which the large end of the casing member is interlocked, a flange formed upon the other end of the tube to engage and retain said ring, and a heating element surrounding the me dial portion of the tube, there being an annular space between said element and the inner surfaces of the casing member.

4. In a hair waving heater, a metallic open ended tube, a heatingelement surrounding the medial portion of the tube, a casing member of insulating material surrounding and spaced from said tube, said casing member comprising a pair of abutting elements, an

inwardly disposed annular shoulder formed integrally on each of said elements, and a flange at each end of said metallic tube, the flanges on the tube engaging the shoulders on said elements and serving to retain the elements in abutting relationship.

5. In a hair waving heater, a metallic open ended tube, a heating element disposed about said tube, a casing of insulating material surrounding the tube and having portions spaced therefrom, said heating element being enclosed within said casing, the opposite ends of said metallic tube having outwardly extending flanges engaging said casing to retain it in position.

6. In a hair waving heater, an open ended tube, a heating element disposed in heating relationabout said tube, an exterior sheath comprising two abutting members in axial alignment surrounding said tube and having portions spaced from said tube, said heating element being enclosed within said sheath, said tube having its ends flanged outwardly into engagement with said annular members to retain them upon said tube in abutting relationship.

7. In a hair waving heater, an open ended cylindrical metallic tube, a sheath comprising a plurality of annular abutting members in ax al alignment and surrounding said tube, said sheath having portions spaced from said tube to form an annular air chamber, a heating element positioned in saidv air chamber and disposed around said tube in heating relationship therewith, said tube being provided with outwardly extending flanges upon its opposite ends, said flanges engaging said sheath to retain the members thereof upon the tube and in abutting relationship.

In testimony whereof, I have hereunto set my hand.

TOMLINSON I. MOSELEY. 

